Nic and David Sheff discuss ‘Beautiful Boy’ and recount addiction

Nic Sheff spent the better part of a decade in and out of rehab, fighting to overcome a crystal meth addiction. Throughout his battle, his father, David, stood by his side. Now, their story is a major motion picture, “Beautiful Boy,” starring Steve Carell and Timothée Chalamet. Nic and David, w…